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How do you 'redo' changes after 'undo' with Emacs?
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Short version: by undoing the undo. If you undo, and then do a non-editing command such as C-f, then the next undo will undo the undo, resulting in a redo.
Longer version:
You can think of undo as operating on a stack of oper...
Downloading jQuery UI CSS from Google's CDN
I am planning on using Google to download the jQuery lib for both UI and Core. My question is, do they allow me to download the CSS for it or should I have to host it myself?
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How can I get the DateTime for the start of the week?
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Troy, I do not believe your code works if the given date is a Sunday and your start of week is Monday. It will return (Sunday + 1) instead of (Sunday - 6)
– Aaron Hoffman
Apr 23 '12 at 14:55
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Git: list only “untracked” files (also, custom commands)
...0:
git ls-files -z -o --exclude-standard | xargs -0 git add
Nice alias for adding untracked files:
au = !git add $(git ls-files -o --exclude-standard)
Edit: For reference: git-ls-files
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Need a simple explanation of the inject method
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You can think of the first block argument as an accumulator: the result of each run of the block is stored in the accumulator and then passed to the next execution of the block. In the case of the code shown above, you are defaulting the accumulator, result, to 0. Each run of the b...
How do I get the name of the active user via the command line in OS X?
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as 'whoami' has been obsoleted, it's probably more forward compatible to use:
id -un
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Find a file in python
...ferent place on each user's machine. Is there a way to implement a search for the file? A way that I can pass the file's name and the directory tree to search in?
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How to run two jQuery animations simultaneously?
...ted Aug 13 '16 at 16:50
Lee Taylor
5,93777 gold badges2626 silver badges4343 bronze badges
answered Jan 17 '11 at 23:31
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Generate a heatmap in MatPlotLib using a scatter data set
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If you don't want hexagons, you can use numpy's histogram2d function:
import numpy as np
import numpy.random
import matplotlib.pyplot as plt
# Generate some test data
x = np.random.randn(8873)
y = np.random.randn(8873)
heatmap, xedges, yedges = np.histogram2d(x, y, bins=50)
extent = [xedges[0], ...
Why are variables “i” and “j” used for counters?
... ultimately from mathematics: the summation notation traditionally uses i for the first index, j for the second, and so on. Example (from http://en.wikipedia.org/wiki/Summation):
It's also used that way for collections of things, like if you have a bunch of variables x1, x2, ... xn, then an ...